Securing together of sheets of paper



Jan. 1, 1929. 1,697,212

P. VON VAGO ET AL SECURING TOGETHER OF SHEETS OF PAPER Filed April 12, 1924 Patented Jan. 1, 1929.

l UNITED STATES PATENT OFFICE.

PAUL VON VAGO AND JOSEPH IPALDY, 0F BUDAPEST, HUNGARY, ASSIGNORS TO VAGO- IPALDY G. M. B. 1:11., OF BERLIN, GERMANY, A CORPORATION 05!? GERMANY.

SECURING TOGETHER 0F SHEETS OF PAPER.

Application filed April 12, 1924, Serial No. 706,044, and in Hungary April 28, 1923.

superposed sheets of paper into such prox-.

imity that the sheets will adhere to each other without the use of any adhesives, met-a1 clamps, or other binders. The binding action is applied along a line fprmed in the min face of the paper, which may be in the form of letters, newspapers,- bags and other art-1- cles. It is also possible toutilize our invention in securing sheets of paper together in. book form, and in sealing together newspapers to prevent the unauthorized opening.

thereof. In this manner the misuse of the papers, usual by newspaper sellers, in'selling to the public copies of papers which have already been opened, is prevented.

Our invention may also be used for securing together files and other documents, for closing envelopes, or for the production of pa er bags and the like.

11 the accompanying drawings are shown, by way of example, various arrangements for carrying out the present invention.

Fig. 1 shows an elevation of a machine capable of being mounted one table and operated by hand, and provided with resiliently mounted pressure rollers.

Fig. 2 shows a vertical machine of Fig. 1.

Fig. 3 shows an. elevation of a modification of the machine shown in Fig. 1. p,

Fig. 4 shows a modification of the roller teeth.

Figs. 5 andG cross section of the are views of several types of bearings for resiliently mounting the rollers.

It is well known that wrappers, newspapers, letter-paper, tubes for cigarettes, and.

other paper articles can be bound together by folding over the edges and providing them with corrugations. In such a method, however, the corrugationsserve to stificn the folded edges in such a way as will prevent the fold from opening.

We have found that a high degree of adhesion can be obtained between the sheets of paper bound together by use of cooperating toothed members provided with wedge shaped teeth for stretching and pressin the sheetstogether along a line. In accor ance with our invention, sheets of paper are passed between sharp wedge shaped teeth provided on two interengaging wheels held together under pressure. One of these wheels, for example 1 (Fig. 1), may be driven, while the other wheel 2 is rotated by the teeth of the first wheel, as is described later.

1 The pitch, which is the same for both wheels, and the dimensions of the teeth should preferably be large in comparison to the thickness of the paper to be bound together; for example, the pitch of the teeth may be about 1-2 mm.

' By means of suficient tension, the separate sheets are pulled along and exposed to high pressure along the binding-seam. In this manner the fibres of the separate sheets are I sheets are held together and cannot be sepa- 7 rated without tearing and destroying the fibers of the material. This binding action is exerted along a line at some distance inward from the edge because the binding efi'ect is then greater. By reason of the wedge shaped construction of the teeth it is possible to allow the entire pressure available in the device to act upon a small surface, namely the sharp edge of the teeth or the sharp edge of the tooth spaces, so that a very high specific pressure is obtained. By means of this method the sheets numbering anywhere from two to about thirty can be edectively bound together. Such binding is efiected without the use of adhesives or auxiliary devices such as staples, fasteners and the like, Even though the fibres of the paper have been stretched, the binding along the seam is ex tremely effective and permanent.

The method of binding sheets of paper toll lth lice utilizing a modification of our invention wherein the binding members provided with tooth-like projections are resiliently mounted with respect to each other.

' This point is of importance since it has been found by investigations that the binding action of the sheets of paper is dependent upon the use of certain specific pressures varyingwith the thickness, the quality, and

number of sheets to be bound together. If

the working pressure is below: this specific pressure no adhesion will take place between the sheets of paper while at a higher pressure the paper will be torn. By resiliently arranging the toothedrollers so that they can yield with respect to each other, a self-regulating and self-adjusting-of the binding pressure may be obtained that eliminates the necessity of changing the maphine adjustment for paper of varying character, thickness and number of sheets.

14 machine provided with means for resiliently pressing the binding members together is shown in F1 s. 1 and 2. .A pair of wheels 1 and 2 serve to ongitudinally guide the sheets and at the same time them together along a line at a distance inward from'the edge. The teeth are preferably sharp and of wedge shape with sharp wedge shaped tooth spaces between them. But our invention is not restricted to machines of this particular tooth form for other forms of teeth may be employed within the scope of our'invention. A

In operation a crank 26 drives the lower wheel l'keyed to the shaft 23. As the teeth of the wheels 1 and 2 engage, the driven wheel 1 will rotate the wheel 2 whichv is loosely mounted on its shaft 27. In order to enable the device to be used for letters and sheets of different kinds of paper, or for paper of difierent thicknesses or pads of adifferent number of sheets, the wheels have their centres adjustable in the direction of the line passing through their centres.

. In the device shown in Figs. 1 and 2, the shaft 27 is mounted on an eccentric disc 80 which in turn is pivoted on the eccentric shaft 24. By means of the blade spring lever 29 hearing against a fixed point 45 of the framework 25, the wheel 2 is pressed against the wheel 1. Between the two wheels there is a slot 44 in the operating table 33 which is preferably arranged in or near the common tangential plane of the wheels. The fixed point or stop 45 of the framework 25, against which the blade spring 29 bears, can be adjusted by means of the set screw 28 to vary the spring of the frame.

of the arrow 31 a work table '33 is secured to a projection 32 on the frame 25 or forms a port-ion of the frame. The table is provided with an upwardly bent edge 34 to form a guide parallel to the direction of movement of the paper. As an aid in guiding the paper in a straight line along said tab-1e a member may be employed for pressing the paper against the table before it enters between the rollers. Such action may be effected by a blade spring 35, as shown in Figs. 1 and 3.

Further modifications of the invention are shown in Figs. 3 to 6'. In the arrangement shown in Figs. 1 and 2, the wheels, after their position has once been adjusted by the set screw ma for a large range of thicknesses or number 0 sheets, remain in that position apart from the shifting of one or other of the wheels according to the thickness of the sheets inserted between them. It may be desirable under some conditions, or in such instances where. the thickness of the paper or the number of the sheets to be bound together over a large range, to retain without adjustment the specific pressure which causes the sheets to bind together. This may be .obtained, for example, by employing a series of co-operating springs of different character, for instance consisting of a blade spring 29 and a spiral spring 291, as shown in Fig. 3, the first of these springs being fixed to the pivot 24, and the last being fixed to a portion In the construction illustrated in Fig. 4 the wheels are not provided with straight teeth but with spiral teeth. By this means ,the length of the sharp edges of the teeth,

which produces the binding action between the paper sheets, can be increased without changing the width of the wheels.

In the modification shown in Fig. 5,.the wheel 1 is pressed agains the wheel 2 mounted in the guide 38 and sli able therein under the action of a spring 39. In the modification shown in Fig. 6, resiliency is obtained by using a double-lever, blade 41 bearing near one end against the abutment 42 and at the other end against a set screw or adjustable spring 43; the blade 41 may be in the form of a blade spring. A forked-bearing 40 carrying the wheel 2 is mounted on the free end of 41 in such a manner that the spring leverage action presses the wheel 2 against wheel 1 which is mounted in a manner similar to wheel 2 in Fig. 1.

It is to his understood that various modifications may be made in the details of construction as here illustrated and described without departing from the scope of our invention as defined by the following claims.

Having thus described ourjnvention what we claim as new and desire to secure by Letters Patent is 1. In a device, for binding superposed sheets of paper together, a frame, two interengaging wheels mounted thereon, the Wheels ,7 wheels towards one another.

2. In a device for binding superposed sheets of paper together, a frame, two inter engaging wheels mounted thereon, the wheels having toothlike projections and correspondingly shaped tooth spaces thereon and acting with pressure-upon the superposed sheets to cause them toadhere'to each other along a line, means for rotating one of said wheels, a pivot loosely mounted within said frame, an eccentric on said pivot, said other wheel mounted loosely on said eccentric, and means for swinging said eccentric around said pivot, said means resiliently pressing the second named wheel towards the first named wheel under adjustable pressure and at variable distance, 1

3. In a device for binding superposed sheets of paper together a frame, two interengaging wheels mounted thereon, the wheels having toothlike projections and correspondingly shaped tooth spaces thereon and acting'with pressure upon the superposed sheets to cause them to adhere to each other along a line, means for rotating one of said wheels, a pivot loosely mounted within said frame, an eccentric on said pivot, said other wheel mounted loosely on said eccentric, a blade spring fixed at one end to said pivot and acting thereon anda stop on the frame adapted to act on the other end of said blade spring, said blade spring being adapted for swinging said pivot and thus pressing the wheels together.

i. lin a device 'for b'nding superposed sheets of paper together, a frame, two inter engaging wheels mounted thereon, the wheels having toothlike rojections and correspondingly shaped toot spaces thereon and acting with pressure upon the superposed sheets to cause them to adhere to each other along a'line, means for rotating one of said wheels, a pivot loosely mounted within said frame, an eccentric onsaid pivot, said other wheel mounted loosely on said eccentric spring means for swinging said eccentric around said pivot, said spring means bein fixed at one end to said pivot and acting thereon, a stop on the frame, said spring means bearing at its other end. against said stop and a stop screw for adjusting the pressure of said spring means.

5. lln a device for binding superposed sheets of paper together, a frame, two interengaging wheels mounted thereon, the wheels having toothlike projections and correspondingly shaped tooth. spaces thereon and acting with pressure upon the super- ,table.

posed sheets to cause them to adhere to each other along a line, means for rotating one of said wheels, a pivot loosely mounted within said frame, an eccentric on said pivot, said other wheel mounted loosely on said eccentric, and means for resiliently swinging said eccentric around said pivot, said means comprising a series of cooperating springs of different characters fixed at one end to said pivot and acting thereon, and fixed at the other end to a portion of said frame.

6. In a device for binding superposed sheets of-paper together by means of interengaging members having toothlike projections acting with pressure upon the superposed sheets to cause them to adhere to each other along aline, means for driving one of said members, the said members being adapted to yield radially in relation to each other, and a table disposed adjacent to the interengaging surfaces of said members, said table being adapted to guide the superposed sheets of paper between said members. i

7. In a device for binding superposed sheets of paper together by means of interengaging members having toothlike projections acting with pressure upon thesuper:

posed sheets to cause them to adhere to each other along a line, means for driving one of said members, a table'disposed adjacent to the interengaging surfaces of said members, said table being adapted to guide the superposed sheets of paper between said members, and a spring actuated member on said table, said spring actuated member being adapted to press the sheets of paper against said 8, ltn a device for binding superposed sheets of paper together, two interengaging members having toothlike projections and correspondingiy shaped toothspaces thereon, means for actuating said members and means for resiliently pressing the said members together, the said toothed members being adapted to act upon the superposed sheets of paper to cause them to adhere to each other along a line. ,7 9. In a devicefor binding superposed sheets of paper together, a frame, two interengaging members mounted thereon, the members having toothlike projections and correspondingly shaped tooth spaces thereon, means for actuating one of said members and means for resiliently pressing the members together, said memb rs being adapted to act upon the superposed heets of paper to cause them to adhere to each other along a line.

10. lln a device for binding superposed sheets of paper together by means of intertions acting- With pressure upon the superposed sheets to cause them to adhere to each other along a line, means for driving one of said members, the said member being adapted to yield radially in relation to each member, a table disposed adjacent to the interengaging surfaces of said members, said table being adapted to guide-thesuperposed sheets of paper between said members and a member of said table, said memberbeingadapted to press the sheets of paper against said table.

12in a device for binding superposed sheets of paper together, two interengaging members having toothlike projections and correspondingly shaped tooth spaces thereon said projections and said toothspaces being of sharp wedge-shaped form, means for acanemia tuating said members and means for pressing the saidmembers together, the said Wedgeshaped tooth members being adapted to' act upon the superposed'sheets of paper to cause them to adhere to each other along a line.

13. In a device for binding superposed sheets of paper together by means of interengaging members having tooth-likeprojections actingwith pressure upon the super posed sheets to cause them to adhere to each other along a line, means for driving one of said members, a table disposed adjacent to the 'in terengaging surfaces of Said members, said table being adapted to guide the superposed sheets of paper between saidmembers, and a member on said table, said member being adapted to press, the sheets of paper against said table.

In testimony whereof We affix our signatures." p

- PAUL VON VAGG.

JOSEPH PALDY. 

